[George Trimble] likes to build crystal radios. The original crystal radio builders used high impedance headphones. In modern builds, you are as likely to include a powered amplifier to drive a ...

Five-time NAB Crystal Radio Award winning station KCVM-FM also received the Crystal Heritage Award. Since 1987, the NAB Crystal Radio Awards have recognized radio stations for their outstanding ...

The crystal oscillator that was used in the US military at that time is like this. Potential is generated when pressure is applied to some crystal bodies such as crystal. Conversely, if external ...

Crystal radios can feel magical, given their ability to tune in audio from distant stations with nothing but the energy from the radio signal itself. However, to achieve this feat, they typically rely ...